The Wanna-Be Ranger

Due to a rare alignment of planets, Zordon has to de-ionize for a brief period. Lord Zedd exploits this by creating the Primator monster out of a white gorilla suit of Zack's. Primator can transform himself into an exact double of anyone, and uses that ability to confuse the Rangers by mimicking them. Meanwhile, Alpha 5 teleports out of the Command Center for a day, and winds up activating his self-destruct sequence when confronted by the monster.